Percolator.



W. F. DEWEY.

PERCOLATOR.

APPLICATION FILED VFEB. 1, 1915-.

PIPLGIYCQQ Mar. 14, 1916.

A TTOR/VE vided in conn WILLIAM F. DEWEY, OF KANSAS CITY, MISSOURI.

PEBCOLATOR.

Specification of Letters Patent.

Patented Mar. 14.19%.

Application filed February 1, 1915. Serial No. 5,430.

To all whom it may concern Be it known that I, VVTLLIAM F. DEWEY, acitizen of the United States, residing at Kansas City, in the county ofJackson and State of Missouri, have invented certain new and usefulImprovements in Percolators, of which the following is a specification.

This invention relatesto improvements in percolators, and has for itsprincipal object to devise a simple and thoroughly sanitary constructionfor securing a quick and effective percolating action whereby a solutionof tea or coffee, or the like, may be produced in which the percentageof the objectionable narcotic ingredient will be practically negligible,or at any rate so small as to be practically harmless. For accomplishingthis purpose a percolating device is prodction with a pot of preferablybut one compartment, in which device means is provided for regulatingthe supply of liquid to the percolating cup entirely by pump actionmanually controlled from outside the pot, and provision is also made forefiectively stirring'or upheaving the grounds through which the liquidis percolated in order that the percolating action may be as thoroughand complete and as nearly instantaneous as'possible.

With this general object in view'the invention comprises various noveland peculiar features of construction, all as hereinafter described andclaimed, reference being had to the accompanying drawing illustratingone form of the same which has been devised for carrying the inventioninto practice. In this drawing Figure 1 is a vertical sectional view ofa pot provided with a percolating device embodyinothe presentimprovements; Fig. 2 is a orizontal section on the line II-II of Fig. 1;and Fig. 3 is an elevation (partly in section) of a modified form ofconstruction of the pump member.

Referring to the said drawing, any suitable form of pot 2 may beemployed in connection with the percolating device proper, said potbeing preferably of single-compartmerit construction, and into which thepump member of the device (hereinafter described) will project to withinthe vicinity of the bot-' pump barrel 18, the lower end of which isjournaled within the bottom of the cup 4: and may be constructed ineither of two forms, as illustrated in Figs. 1 and 3, respectively.

In the construction illustrated in Fig. 1, showing the preferred form,the lower end of the pump barrel 18 is received within the upper end ofa sleeve or barrel extension 20 of the same diameter as the barrel 18,but having the expanded portion 22 for journaling the lower end of thebarrel 18. The upper end ofthe expanded portion 22 is fitted in anopening 24 in the bottom of the cup 4, and is provided with a suitableflange 26 whereby the sleeve 20 may be soldered or otherwise firmlysecured to the bottom of the cup. The upper end of the barrel 18 isformed with a reduced hollow stem portion 28 adapted to be journaled ina bore 30 in the glass percolator top 32, which latter is supported inthe ring cover member 34:, which in turn fits the mouth of the cup 4.

Adjacent the bottom. of the cup the barrel 18 is formed with a hub 36,which is pro-= vided with a series of agitator or stirrer blades 38,each fashioned with a slight helical turn or twist and extendingradially slightly above the bottom of the cup. The

stem 28 of the pump barrel is squared at its upper end for fitting asquare socket in a plug 40 of the ring 42, adapted to be manuallyengaged for turning the barrel and so rotating the stirrer blades.

The form shown in Fig. 3 differs from the above construction only inthat the pump barrel 18 and the extension 20 are in one integral piece,with the hub 36 resting upon the bottom of the cup 4 at the opening 24,so

upon the plug 40. Outlet openings 54 are{ pump barrel at points withinthe glass top 32.

provided in the In the use of the device, the substance from which asolution is to be prepared is placed in the'drip cup 4, and the water inthe pot is brought to the boiling point, after which the pump isoperated the necessary" number of times to obtain the desired strengthof solution, which can thus be readily controlled or regulated by theperson using the device. In order to render the action more effectiveand thorough and materially quicken thev formationof the solu-' tion, isis only necessary to rotate the pump barrel and thereby operate thestirrer blades, which results in completely upheaving the mass ofgrounds that otherwise tend to become closely packed and more or lessimervious to the percolation of the liquid.

y thus keeping the grounds stirred or agitated the percolating action ishastened and made more effective, and the desired strength of solutionis obtained after a very few operations of the ump. It is also to benoted that the regulation of the device is all attended to from theexterior of the pot, there being no necessity for removing the cover formanipulating any of the parts while in use.

The device comprises very few parts which are not easily to be gottenout of order, and which may readily be taken apart for cleaningpurposes, and there are no inaccessible corners or crevices calculatedto collect particles of refuse. In this connection it will be noted thatthe sleeve 20 of the preferred form provides a suitable handle forconveniently manipulating the drip cup whenever the latter is beingcleaned.

While the foregoing represents what is now deemed to be the preferredform of embodiment of the invention, the right is reserved to suchformal changes and modifications as may fairly fall within the scope ofthe appended claims.

Claims:

1. In a percolator, the combination of a drip cup, a pump memberrotatablv mounted within said cup, a stirrer member secured fixedly tosaid pump member within the cup,

drip cup having a bottom opening, a depending pump sleeve having anexpanded upper end fitting 111' said opening and secured fixedly to saidcup, and a pump member having its lower end journaledin the upperexpanded end of said sleeve.

4. In a percolator, the combination of a drip cup provided with a cover,said cup and cover having alined top and bottom openings, a dependingsleeve having its upper end fitting in said bottom opening and securedfixedly to the cup, and a pump member journaled at its opposite ends insaid top opening and the upper end of said sleeve respectively.

5. In a percolator, the combination of a drip cup provided with a cover,said cover an cup having alined top and bottom openings respectively, apump barrel having its upper end journaled in said top opening, and adepending sleeve having a lower portion of the same diameter as'saidpump barrel and an expanded upper ortion serving to journal the lowerend 0 said barrel, said expanded portion being fitted in said bottomopening and secured fixedly to said drip cup.

6. In a percolator, the combination of a drip cup provided with a cover,said cover and cup having alined top and bottom openings respectively, apump barrel having its upper end journaled in said top opening, stirrerblades fixedly secured to said barrel and extending radially within thecup and in slightly spaced relation to the bottom thereof, a dependingsleeve having a lower portion of the same diameter as said pump barreland an expanded upper portion secured within-said bottom opening andserving to journal the lower end of said barrel, and means attached tothe upper end of said barrel exteriorly of the cup for manually turningsaid pump barrel.

7. In a percolator, the combination of a drip cup provided with a cover,said cover and cup having alined top and bottom openings respectively, apump barrel having its opposite end portions journaled in said openings,a stirrer member fixedly secured to said barrel adjacent the bottom ofthe cup, a member secured to the upper end of said barrel exteriorly ofthe cup for manually turning said pump barrel, and a lunger having astem accommodated sliding y with-*-v in the upper end of said barrel andbarrelturning member and provided with a knob resting normally upon saidbarrel-turning member.

In testimony whereof I afiix my signature in the presence of twowitnesses.

WILLIAM F. DE'WEY.

Witnesses:

D. E. CURP, C. W. GERARD.

